21400300410 has 16 divisors (see below), whose sum is σ = 51360721056. Its totient is φ = 5706746768.

The previous prime is 21400300393. The next prime is 21400300447. The reversal of 21400300410 is 1400300412.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21400300410.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356671644 + ... + 356671703.

It is an arithmetic number, because the mean of its divisors is an integer number (3210045066).

Almost surely, 2^21400300410 is an apocalyptic number.

21400300410 is an abundant number, since it is smaller than the sum of its proper divisors (29960420646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21400300410 is a wasteful number, since it uses less digits than its factorization.

21400300410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713343357.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21400300410 its reverse (1400300412), we get a palindrome (22800600822).

The spelling of 21400300410 in words is "twenty-one billion, four hundred million, three hundred thousand, four hundred ten".